FEATURES of the MSR Hyperflow Microfilter Cartridge Replacement Cartridge life: ~1000 liters Filter media: Hollow fiber Made in Seattle, USA SPECIFICATIONS of the MSR Hyperflow Microfilter Cartridge Replacement Weight: .8 oz / 23 g Diameter: 1.2 in / 3 cm Length: 4.9 in / 12.5 cm Cartridge housing: ABC / PC blend This product can only be shipped within the United States. Please don"t hate us.